Physical security covers the set of measures, physical and procedural, aimed at preventing any unauthorised person from gaining physical access to ESA premises and specific security zones, as well as to unclassified sensitive or classified information.
Each single asset, whether a document, laptop, USB stick or a personal belonging such as a wallet or purse, must be protected correctly, according to its value and/or the sensitivity of the information it contains.
The physical protection of these assets should never depend on one safeguard alone. A cascade of protection measures will deter or delay attempts by non-authorised people to access a specific asset or information. This is the principle of “defence in depth".